Cotton gin



J. L. HART COTTON GIN Feb. 19, 1929;

Filed May 19. 1927 INVENTOR J13. ll art,

ATTORNEYS I WITNESSES Patented Feb. 19, 1929.

UNITED} STATES,

PATENT OFFICE.

JOSEPH L. naivrior on rcxas n, OKLAHOMA.

- corron em.

Application filed May 19,

This invention relates to improvements in cotton gin generally, and more particularly to the air blast types of such cotton gins.

Briefly, in the ginning process, as carried out in an air blast cotton gin, the raw cotton passes from the roll box in a downward direction-between the huller ribs and the ginning ribs associated with the gin saws, when the hulls will be separated from the lintcotton and pass forwardly and downwardly through called in the practice motes, remaining in the lint will be thrown from thesaws, by centrifugal'force, over the air blast nozzle and into the conveyor provided for discharging the motes outward of the gin, This air nozzle is usuall made of metal, and, as a consequence, t ereof, it has a tendency to sweat or gather moisturein damp weather, so that in this operation the. motes tend to accumulate on the nozzle, and there is more or less of an accumulation on the same at all times, such as is detrimental to the otherwise efficient ginning operation. These accumulations very often build up on the nozzle in such quantity thatthe saw catches an accumulation and pulls it into the lint flue, and to such an extent that the latter frequently becomes clogged, with the result that the flow of lint cotton is seriously retarded, or entirely stopped in its passage through the lint'fiue from the saw to the point of its discharge from the gin, or into the condenser. In the event of the lint flue not becoming clogged by this accumulation of foreign -matter or motes, it passes on through the flue into the lint cotton, thereby lowering the grade of the lint. These accumulations of foreign matter or motes, therefore, offer Very serious objections to and disadvantages in this type of cotton gin, and prevents the desired and proper moting of the lint cotton.

It is, therefore, the principal object of this invention to provide a simple but efficient means, in the form of an attachment to known types or makes f air blast cotton gins, which will act upon ov otherwise cooperate with the 1927. Serial No. 192,624;

air nozzle in a manner to clear the same of any and all accumulation of foreign matter or motes at all times throughout successive ginning Operations.

1 Another object of the invention is to provide for an attachment or means, as herein before characterized, which. may be of any desiredform, whether a brush doffer, an

I agitator, astripper or a sweeper, whereby to effectively accomplish the expressed purposes and results in producing lint cotton of highest rade.

a With the foregoing and other equally important objects, purposes and advantages in view, the invention resides in the certain new and useful combination and arrangement of parts as will be hereinafter more fully described, set forth in-the appended claims, and illustrated in the accompanying drawing, in

which Figure 1 is a vertical longitudinal section through a conventional form of air blast cot ton gin, andshowing a practical application of the invention thereto, and

Figure Qis an enlarged sectional detail of the air nozzle and the associated cleaning device, the latter being preferably in the formof a rotatingbrush or brush doffer.

Referring to the drawing, 10 is one of the side frames or walls of the gin; 11 the roll box for receiving theraw cotton to be treated 12 the huller ribs and 13 the ginning ribs spaced slightly rearwardly from the huller ribs 12, both sets of ribs being associated with the saw cylinder 14; 15 the spiked roll for aiding in the passa e of the separated hulls downward of the gin for discharge into the upper compartment of the discharge trough 16; 17 the outlet throat for discharging the seed downward of the gin and into the lower compartment 16 of the discharge trough 16. When the cotton fiber is drawn through the ginning ribs 13 andreaches the proximate point X, in the path of movement of the saw edge, the foreign matter or motes, remaining inthe same, is thrown by the cen trifugal. force of the rotating saw rearward] y from the latter and into the receiving trough 18 of a conveyor 19. Located in close proximity to the rear edge of the lower quarter of the saw 1415 the intake end of the lint flue 20, which'receives the fiber from the saws and conveys the same rearwardly of the gin to its point of discharge. Arranged immediately above the throat of the lint flue 20 is a perforated nozzle or head 21 of the air duct 22 leading to the nozzle or head from the air chamber 23 located in the extreme rear part of the gin. The purpose of this air blast is to assist in the cleaning of the cotton fiber or lint, and to otherwise aid in ridding the same of the remaining foreign matter or motes. All of the foregoing elements, parts and mechanisms pertain generally to a conventional form of air blast cotton gin, and of themselves do not constitute any part of the present invention.

To accomplish the desired objects and purattached to the ends or sides of the frame 10 of the gin. The cleaning elements 0, preferably in the formof tufts or bristles, are secured in the peripheral surface of the cylinder andact to wipe across the uppermost surface of the nozzle head 21. In addition to this wiping action on the nozzle head 21, the rotating brush or brush doffer will catch the foreign matter or motes, which would ordinarily accumulate on the nozzle or head 21, and throw the same rearwardly therefrom and into the trough 18 of the conveyor 19 by its brushing action on the nozzle or head. This cleaning brush or brush doffer is to be suitably geared to, or otherwise driven from a suitable source of power inherent to the gin operating mechanism Without further description, it is thought that the features and advantagesof the invention will be readily apparent to those skilled in the art, and it will of course be understood that changes in the form, proportion and minor details of construction may be re sorted to, without departing from the spirit 'ofthe invention orits scope as claimed.

Having thus fully described the invention,

what is claimed is:

1. In a cotton gin or the like, the combination with a saw, of an air blast nozzle at the rear side of the saw, and arotating cleaning member for removing lint and mote accumulations from the nozzle.

2. In a cot-ton gin or the like, the combination with a saw, of an air blast nozzle at the rear side of the saw, and a rotating brush for removing lint and mote accumulationsfrom the nozzle. 1

3. In a cotton gin and the like, the coinbination with a saw, of an airblast nozzle at I the rear side of the saw, and a power operated rotating brush for removing lint and mote accumulations from the nozzle continuously throughout successive ginning operations.

4. In a cotton gin'and the like,the combination with a saw, of an air blast nozzle'at the rear side of the saw, and a rotating cylindrical brush arranged for simultaneous operation with the gin for removing lint and mote accumulations from the nozzle.

5. In combination with a cotton gin including a frame, a saw within said frame,-an air blast nozzle arranged adgacentv said saw,

and a cylindrical brush mounted for rotating movement within the frame simultaneously with said saw and adapted to wipe across the nozzle to remove-lint and mote accumulations therefrom. v

JOSEPH L. 'HART. 

